`dbu.edu`

DNSSEC	⚠️ Not signed
A	128.203.233.133^{🇨🇦 Microsoft128.203.0.0/16}
NS	`ns1-08.azure-dns.com` ⭐
		A	2603:1061:0:700::8^{🇺🇸 Microsoft2603:1000::/25 MICROSOFT}
			PTR	`ns1-08.azure-dns.com`
		A	13.107.236.8^{🇺🇸 Microsoft13.104.0.0/14 MICROSOFT}
			PTR	`ns1-08.azure-dns.com`
NS	`ns2-08.azure-dns.net`
		A	2620:1ec:8ec:700::8^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns2-08.azure-dns.net`
		A	150.171.21.8^{🇺🇸 Microsoft150.171.0.0/16 MICROSOFT}
			PTR	`ns2-08.azure-dns.net`
NS	`ns3-08.azure-dns.org`
		A	2a01:111:4000:700::8^{🇬🇧 Microsoft2a01:111:4000::/36}
			PTR	`ns3-08.azure-dns.org`
		A	204.14.183.8^{🇺🇸 Microsoft204.14.180.0/22}
			PTR	`ns3-08.azure-dns.org`
NS	`ns4-08.azure-dns.info` ⚠️ Not in parent delegation
		A	2620:1ec:bda:700::8^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns4-08.azure-dns.info`
		A	208.84.5.8^{🇺🇸 Microsoft208.84.0.0/21 MICROSOFT}
			PTR	`ns4-08.azure-dns.info`
MX	`dbu-edu.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c902::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj0pr03cu01602.inbound.protection.outlook.com`
		A	2a01:111:f403:c902::14^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-byapr04cu00204.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::5^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch4pr21cu00105.inbound.protection.outlook.com`
		A	2a01:111:f403:f90d::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sn1pr0501cu00301.inbound.protection.outlook.com`
		A	52.101.9.2^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-mn2pr02cu00202.inbound.protection.outlook.com`
		A	52.101.40.4^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-cy5pr03cu00204.inbound.protection.outlook.com`
		A	52.101.41.21^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj2pr05cu00305.inbound.protection.outlook.com`
		A	52.101.41.26^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj0pr03cu01702.inbound.protection.outlook.com`
TXT	`facebook-domain-verification=cukleq6nfayl1yeod2h1nc5qd3fmuj`
TXT	`MS=ms35506146`
TXT	`v=spf1 ip4:12.5.161.2 ip4:207.141.172.2 ip4:12.5.161.82 ip4:12.5.161.113 ip4:...`
TXT	`Dpc048RH/CQchYQyFIw13PIehlxsLs3gtyMEZ3liwl5lEeiqz83XhMJ731JkhFbrufxh7PA5Zg6c2...`
TXT	`adobe-idp-site-verification=7014fadcdb3a2fe553dd423b47c7c3c798563ba69954bb632...`
TXT	`pardot708303=0e2df4692ed19dd5409c96e1ab553d1f0c1f905ccefaf8e51a9c98d191c6d948`
TXT	`00d1u000000wqrsuaq`
TXT	`apple-domain-verification=TB0Xn8XkCcKba4EC`
TXT	`p5a4pjqqbb6a9gomou0kb5miel`
TXT	`na1kb52nioliag6d6h323q6su0`
TXT	`google-site-verification=CabDnKw3Jz8fuwk39G3fOUJD46bbqwjbvPQC9P1xsOQ`
TXT	`4tpu767chr7j1ugcgp6khphn83`
SOA	`ns1-08.azure-dns.com`azuredns-hostmaster@microsoft.com serial=1

`edu`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.edu-servers.net` ⭐
	NS	`b.edu-servers.net`
	NS	`c.edu-servers.net`
	NS	`d.edu-servers.net`
	NS	`e.edu-servers.net`
	NS	`f.edu-servers.net`
	NS	`g.edu-servers.net`
	NS	`h.edu-servers.net`
	NS	`i.edu-servers.net`
	NS	`j.edu-servers.net`
	NS	`k.edu-servers.net`
	NS	`l.edu-servers.net`
	NS	`m.edu-servers.net`
	SOA	`a.edu-servers.net`nstld@verisign-grs.com serial=1772435516

rank #63254 globally
rank #993 in the tld
WOT: SAFE (88/100)
📈 Tranco rank: #177,677

Subdomains

a216.dbu.edu

psalms.dbu.edu

www-a.dbu.edu

mx1.dbu.edu

s098.dbu.edu

webtest.dbu.edu

mail.dbu.edu

online.dbu.edu

spam1.dbu.edu

whydbu.dbu.edu

a199.dbu.edu

email1.dbu.edu

bbtest.dbu.edu

real.dbu.edu

www3.dbu.edu

romans.dbu.edu

s064.dbu.edu

www.dbu.edu

mx2.dbu.edu

webreg.dbu.edu

www2.dbu.edu

s174.dbu.edu

s230.dbu.edu

gate1.dbu.edu

spam2.dbu.edu

Same first word

dbu.co

dbu.ru

dbu.gg

dbu.cn

dbu.io

dbu.co.uk

dbu.in

dbu.nu

dbu.dk

dbu.de

dbu.ca

dbu.org

dbu.sk

dbu.guru

dbu.co.za

dbu.eu

dbu.com.cn

dbu.be

dbu.lt

dbu.edu

dbu.ch

dbu.com

dbu.group

dbu.ltd

dbu.co.kr

dbu.cc

dbu.at

dbu.edu.et

dbu.cz

dbu.hu

Similar names

dub.ch

bdu.im

ubd.fr

dub.js.cn

bud.dk

udb.kr

bud.hm

dub.city

dub.cn

bud.rs

ubd.at

bdu.de

udb.ch

bud.az

bdu.uk.com

bud.ai

bud.co.cr

ubd.ro

bud.lt

bud.tm

dub.ru

bdu.ch

udb.info

bud.tw

bdu.ro

bud.football

bud.com.tj

bud.by

bud.co.tt

bdu.cx

bdu.az

bud.lu

bud.com.pk

bud.de

bdu.nl

ubd.se

bdu.edu.et

bud.info

bud.bingo

bdu.ac

bud.us

dub.la

bud.tc

bud.gs

bdu.com.pl

dub.cz

dub.digital

bud.md

bdu.ac.za

bud.gf

bud.mobi

bud.hk

bud.sg

bud.gl

bud.church

bdu.eu

bdu.vn

dub.center

udb.cn

bud.com.au

dub.vg

bud.pa

udb.com.tw

bud.co.uk

bud.it

bud.org.tw

bud.am

dub.com.br

bud.co.at

bud.nl

bud.boutique

bud.af

bud.org.cn

bud.ua

ubd.be

bdu.ca

dub.in

bud.ru

ubd.ch

bdu.at

bud.rw

bud.com

bud.gd

bud.ge

ubd.org

bud.uz

bud.com.pt

bud.gm

dub.fi

bud.lk

udb.cc

udb.at

dub.io

DNS History

16 records (6 active, 10 former)

●NSns1-08.azure-dns.com2021-12-03 → 2026-03-20 · 3 obs

○ 2018-10-22 19:17:48
● 2021-12-03 21:26:08
● 2026-03-20 12:02:06

○NSns1.theplanet.com2015-08-07 → 2018-10-22 · 4 obs

● 2015-08-07 00:57:40
● 2018-10-22 19:17:48
○ 2021-12-03 21:26:08
○ 2026-03-20 12:02:06

●NSns2-08.azure-dns.net2021-12-03 → 2026-03-20 · 3 obs

○ 2018-10-22 19:17:48
● 2021-12-03 21:26:08
● 2026-03-20 12:02:06

○NSns2.theplanet.com2015-08-07 → 2018-10-22 · 4 obs

● 2015-08-07 00:57:40
● 2018-10-22 19:17:48
○ 2021-12-03 21:26:08
○ 2026-03-20 12:02:06

●NSns3-08.azure-dns.org2021-12-03 → 2026-03-20 · 3 obs

○ 2018-10-22 19:17:48
● 2021-12-03 21:26:08
● 2026-03-20 12:02:06

●NSns4-08.azure-dns.info2021-12-03 → 2026-03-20 · 3 obs

○ 2018-10-22 19:17:48
● 2021-12-03 21:26:08
● 2026-03-20 12:02:06

●MXdbu-edu.mail.protection.outlook.com2021-12-03 → 2026-03-20 · 3 obs

○ 2018-10-22 19:17:48
● 2021-12-03 21:26:08
● 2026-03-20 12:02:06

○MXmx1.dbu.edu2015-08-07 → 2018-10-22 · 4 obs

● 2015-08-07 00:57:40
● 2018-10-22 19:17:48
○ 2021-12-03 21:26:08
○ 2026-03-20 12:02:06

○MXmx2.dbu.edu2015-08-07 → 2018-10-22 · 4 obs

● 2015-08-07 00:57:40
● 2018-10-22 19:17:48
○ 2021-12-03 21:26:08
○ 2026-03-20 12:02:06

○A107.154.108.1412016-12-28 → 2018-10-22 · 5 obs

○ 2016-09-09 15:33:30
● 2016-12-28 03:15:08
● 2018-10-22 19:17:48
○ 2021-12-03 21:26:08
○ 2026-03-20 12:02:06

○A107.154.110.1412016-12-28 → 2018-10-22 · 5 obs

○ 2016-09-09 15:33:30
● 2016-12-28 03:15:08
● 2018-10-22 19:17:48
○ 2021-12-03 21:26:08
○ 2026-03-20 12:02:06

○A12.5.161.512015-08-07 → 2016-02-17 · 4 obs

● 2015-08-07 00:57:40
● 2016-02-17 03:19:34
○ 2016-05-07 01:55:08
○ 2026-03-20 12:02:06

●A128.203.233.1332026-02-17 → 2026-03-20 · 3 obs

○ 2021-12-03 21:26:08
● 2026-02-17 19:22:50
● 2026-03-20 12:02:06

○A192.230.66.882016-05-07 → 2016-09-09 · 5 obs

○ 2016-02-17 03:19:34
● 2016-05-07 01:55:08
● 2016-09-09 15:33:30
○ 2016-12-28 03:15:08
○ 2026-03-20 12:02:06

○A192.230.74.882016-05-07 → 2016-09-09 · 5 obs

○ 2016-02-17 03:19:34
● 2016-05-07 01:55:08
● 2016-09-09 15:33:30
○ 2016-12-28 03:15:08
○ 2026-03-20 12:02:06

○A40.124.24.1032021-12-03 → 2021-12-03 · 4 obs

○ 2018-10-22 19:17:48
● 2021-12-03 21:26:08
○ 2026-02-17 19:22:50
○ 2026-03-20 12:02:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
edu	a.edu-servers.net, b.edu-servers.net, c.edu-servers.net, d.edu-servers.net...	-
dbu.edu	ns1-08.azure-dns.com, ns2-08.azure-dns.net, ns3-08.azure-dns.org	-

✅ Authoritative Response

Server: 204.14.183.8

NS records: ns1-08.azure-dns.com, ns2-08.azure-dns.net, ns3-08.azure-dns.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dbu.edu (unsigned zone)

⏱️ Timing

Total: 306ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`128.203.233.133`
NS	4	`ns1-08.azure-dns.com, ns2-08.azure-dns.net...`
MX	1	`dbu-edu.mail.protection.outlook.com (pri`
TXT	12	`facebook-domain-verification=cukleq6nfay, MS=ms35506146...`
SOA	1	`ns1-08.azure-dns.com azuredns-hostmaster`

Analysis

Hierarchy

dbu.edu is the parent of a216.dbu.edu, psalms.dbu.edu, www-a.dbu.edu, mx1.dbu.edu, s098.dbu.edu and a few other host names.

IP Addresses

dbu.edu resolves to one IP number: 128.203.233.133.

other host names including webreg.dbu.edu, www2.dbu.edu, whydbu.dbu.edu, www3.dbu.edu and www.dbu.edu share IP numbers with dbu.edu.

Name Servers

dbu.edu is delegated to four name servers: ns1-08.azure-dns.com, ns4-08.azure-dns.info, ns2-08.azure-dns.net and ns3-08.azure-dns.org.

dbu.edu at least partially shares name servers with other domains, for instance wingtiptoys.com, davidsonchocolate.com, mylam.info, crippa.us and mak-telemarketing.ch.

Host names with two IP numbers:

ns1-08.azure-dns.com points to 2603:1061:0:700::8 and 13.107.236.8; ns4-08.azure-dns.info points to 2620:1ec:bda:700::8 and 208.84.5.8; ns2-08.azure-dns.net points to 2620:1ec:8ec:700::8 and 150.171.21.8; ns3-08.azure-dns.org points to 2a01:111:4000:700::8 and 204.14.183.8.

Mail Servers

dbu.edu is handled by a single mail server, dbu-edu.mail.protection.outlook.com.

Host dbu-edu.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c902::2, 2a01:111:f403:c902::14, 2a01:111:f403:c946::5, 2a01:111:f403:f90d::1, 52.101.9.2, 52.101.40.4, 52.101.41.21 and 52.101.41.26.

dbu.edu - robtex.com

dbu.edu

edu

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`dbu.edu`

`edu`